Display screen, or portion thereof, with an animated graphical user interface



FIG. 1 is the first image in a sequence for a display screen, or portion thereof, with an animated graphical user interface showing a first embodiment of the new design;

FIG. 2 is a second image thereof;

FIG. 3 is the first image in a sequence for a display screen, or portion thereof, with an animated graphical user interface showing a second embodiment of the new design; and,

FIG. 4 is a second image thereof.

The appearance of the display screen, or portion thereof, with animated graphical user interface sequentially transitions between the images shown in FIGS. 1 and 2, and FIGS. 3 and 4, respectively. The process or period in which an image transitions to another forms no part of the claimed design. The outermost broken lines represent the display screen or portion thereof and form no part of the claimed design. The other broken lines showing text form no part of the claimed design. 

CLAIM The ornamental design for a display screen, or portion thereof, with an animated graphical user interface, as shown and described. 